Energy conversion in everyday devices gives Grade 4 students a practical way to explore how electrical energy changes into light, sound, heat, or motion. Through familiar objects such as flashlights, fans, solar-powered toy cars, doorbells, and blenders, students examine how devices use energy to perform useful tasks.

Follow the energy through each device

Students explore what happens inside a flashlight when its battery supplies energy to a bulb or LED. They consider how a reflector directs light and how some electrical energy also becomes thermal energy. The electric fan provides a different example: its motor changes electrical energy into motion, and its spinning blades move air around a room.

The solar-powered toy car introduces a sequence of energy changes. Solar cells absorb sunlight and convert light energy into electrical energy, which powers a motor and makes the wheels or propeller move. The wired doorbell shows how a closed circuit carries electrical energy to a chime mechanism, where an electromagnet can move a metal striker. A blender connects electrical energy to the motion of rotating blades that mix, chop, or crush food.

What students practise

Each reading passage focuses on a device and the parts that help it work. Students identify the main idea, select supporting details, and distinguish central information from additional explanations. They also encounter useful science vocabulary, including chemical energy, electrical energy, light energy, thermal energy, motion energy, solar cells, motor, circuit, reflector, and electromagnet.

The reading organizer format gives students a clear way to connect a device's materials and components with its function and the energy changes taking place. Rather than treating energy conversion as an abstract definition, students use familiar examples to explain how parts work together.

Resource contents

• Informational passages about a flashlight, electric fan, solar-powered toy car, wired doorbell, and blender.
• Main idea and supporting details organizer answers for each passage.
• Picture plans showing the devices and important components discussed in the reading.

Ways to use it in class

Use the passages during a Grade 4 physical science unit on energy conversion, as guided reading, or for independent informational-text practice. They can also support a class discussion in which students compare how different devices use energy and identify the parts responsible for each change. The familiar examples make it easier to connect science reading with objects students may see at home or school.